Home / 65,679.47-98,533.61-21,310.70

Finding the Fourth Proportional to 65,679.47, 98,533.61 and 21,310.70

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Solution

The fourth proportional to 65,679.47, 98,533.61 and 21,310.70 is: 31,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,679.47 : 98,533.61 = 21,310.70 : x
  2. Step 2: Convert to fraction form
    65,679.47/98,533.61 = 21,310.70/x
  3. Step 3: Cross multiply
    65,679.47x = 98,533.61 × 21,310.70
  4. Step 4: Simplify right side
    65,679.47x = 2,099,819,603.41
  5. Step 5: Solve for x
    x = 2,099,819,603.41/65,679.47
  6. Step 6: Final answer
    x = 31,970.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.